Some psychophysical tests of the conspicuities of emergency vehicle warning lights /
by Gerald L. Howett, Center for Building Technology, National Bureau of Standards, and the Law Enforcement Standards Laboratory, Center for Consumer Product Technology, National Bureau of Standards ; prepared for National Institute of Law Enforcement and Criminal Justice, Law Enforcement Assistance Administration, U.S. Department of Justice.
|Main Author:||Howett, Gerald L.|
Washington : Dept. of Commerce, National Bureau of Standards : for sale by the Supt.of Docs., U.S. Govt. Print. Off., 1979.
iv, 20 p. :
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